By 24 months, most children are about ____ percent of their adult height.

Compared to older adults, adults in their 20s and 30s have __________________.

Following fertilization, a one-celled ________ multiplies and forms a ____________.

For erikson, delinquency is an attempt to establish _____, even if it is a negative one.

Freud emphasized the importance of _____ in determining behavior.

Girls usually develop emotional regulation _____ boys.

A developmental ________ that compares people of different ages at a single point in time to infer age differences

Random assignment is a method of assigning participants that ensures each participant has an equal chance of being assigned to the experimental group or control group.

The factor proposed to change the behavior under study in an experiment; it is systematically manipulated during an experiment is known as

The behavior under study in an experiment; it is expected to be affected by changes in the independent variable is known as

A _________ that permits inferences about cause and effect by exerting control, systematically manipulating a variable, and studying the effects on measured variables is called experimental design